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    • 1. 发明授权
    • Modular transducer assembly
    • 模块化传感器组件
    • US4069433A
    • 1978-01-17
    • US692694
    • 1976-06-03
    • James L. McShane
    • James L. McShane
    • B06B1/06G01F1/66G10K11/00H01L41/04
    • B06B1/0674G01F1/662G10K11/004
    • A flowmeter transducer assembly specially designed for high temperature operation includes only dry-coupled elements. A subassembly preassembled before installation on the pipe section consists of a piezoelectric element held between front and backing electrodes. The backing electrode is backed by a contact electrode while leaving a gap therebetween to prevent reflection of acoustic energy back to the rear of the transducer. The subassembly is introduced into a housing clamped directly on a flow section of a pipe, where the pipe wall is an acoustic wave transmitting or receiving window. In a different embodiment the pipe may serve as the front electrode in dry coupling.
    • 专为高温操作设计的流量计传感器组件仅包括干耦合元件。 在安装之前预先组装在管段上的子组件由保持在前部和后部电极之间的压电元件组成。 背衬电极由接触电极支撑,同时留下间隙,以防止声能量反射回换能器的后部。 子组件被引入到直接夹在管道的流动部分上的壳体中,其中管壁是声波发射或接收窗口。 在不同的实施例中,管可以用作干式联接中的前电极。
    • 2. 发明授权
    • Ultrasonic position sensor and method
    • 超声波位置传感器及方法
    • US5228342A
    • 1993-07-20
    • US736360
    • 1991-07-26
    • James L. McShane
    • James L. McShane
    • G01N29/07
    • G01N29/07Y10T137/8225
    • An ultrasonic position sensing apparatus for detecting open, closed and intermediate positions of a valve element movably mounted in a valve housing includes an ultrasonic target fixedly attached to the valve and having an echo surface which provides a travel time difference for a returning echo, depending on the position of the valve element. An ultrasonic transducer coupled to an outer surface of the valve housing transmits an ultrasonic pulse towards the target thereby generating the echo by striking the target; a monitor means connected to the ultrasonic transducer correlates valve position to the travel time of the returning echo.
    • 用于检测可移动地安装在阀壳体中的阀元件的打开,关闭和中间位置的超声波位置检测装置包括固定地附接到阀的超声波目标,并具有回波表面,该回波表面为回波回波提供行程时间差,这取决于 阀元件的位置。 耦合到阀壳体的外表面的超声波换能器将超声波脉冲朝向目标传送,从而通过撞击靶产生回波; 连接到超声波换能器的监视器装置将阀位置与返回回波的行进时间相关联。
    • 3. 发明授权
    • Liquid measurement arrangement
    • 液体测量装置
    • US4787240A
    • 1988-11-29
    • US91226
    • 1987-08-31
    • James L. McShane
    • James L. McShane
    • G01F23/296G01F23/28
    • G01F23/2968
    • A pipe section through which a liquid passes includes a transmitting and receiving transducer diametrically opposed on the surface of the pipe and arranged to project acoustic energy through the interior of the pipe whereby the output signal from the receiving transducer changes in the presence of a liquid in the acoustic path between the transducers. V-shaped grooves or other surface modifications are made to the surface of the pipe circumferentially between the transducers so as to redirect wall-borne acoustic energy to a more axial direction thus preventing its reception at the receiving transducer.
    • 液体通过的管部分包括在管表面上沿径向相对的发射和接收换能器,并且布置成通过管内部突出声能,由此来自接收换能器的输出信号在存在液体的情况下变化 换能器之间的声路。 在换能器之间沿圆周方向对管道表面进行V形槽或其它表面改性,以将壁传声能量重定向到更轴向,从而阻止其在接收换能器处的接收。
    • 5. 发明授权
    • Location and velocity measurement system using atomic clocks in moving
objects and receivers
    • 位置和速度测量系统在移动物体和接收器中使用原子钟
    • US5696514A
    • 1997-12-09
    • US608424
    • 1996-02-28
    • Harvey C. NathansonCharles W. Einolf, Jr.James L. McShaneElbert L. Cole, Jr.
    • Harvey C. NathansonCharles W. Einolf, Jr.James L. McShaneElbert L. Cole, Jr.
    • G01S5/06G01S11/10G01S13/91G01S13/06
    • G01S11/10G01S5/06G01S13/91
    • A coherent signal generated at a precise frequency determined by an atomic clock is transmitted by a moveable object. A receiver station compares the frequency of the coherent signal received from the moving object with a second coherent signal generated at the same precise frequency by an atomic clock in the receiver to determine the radial component of the velocity of the moveable object relative to the receiver as a function of the doppler shift of the transmitted signal. Low cost, low power, miniature atomic clocks with an accuracy of 10.sup.-11 make possible accurate measurements of velocities of only centimeters per second. Such velocity measurement can be used to enhance radar tracking in air traffic control and collision avoidance systems. These velocity measurements can also be used to resolve tracking ambiguities in precision location systems, such as prisoner, geriatric and airport ground control systems, where three or more receiver stations each having an atomic clock measure time of flight of the transmitted coherent signal to triangulate moving object position.
    • 以由原子钟确定的精确频率产生的相干信号由可移动物体传输。 接收机站将从移动物体接收的相干信号的频率与在接收机中以原子钟相同的精确频率产生的第二相干信号进行比较,以确定可移动物体相对于接收机的速度的径向分量, 发射信号的多普勒频移的功能。 低成本,低功耗,精度为10-11的微型原子钟可以准确测量每秒钟厘米的速度。 这种速度测量可用于加强空中交通管制和防撞系统中的雷达跟踪。 这些速度测量还可用于解决精确定位系统(如囚犯,老人和机场地面控制系统)中的跟踪模糊度,其中三个或更多个接收器站各自具有原子钟测量传输的相干信号的飞行时间以三角测量 对象位置。